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Message-ID: <20220805111444.6c1fefb1@gandalf.local.home>
Date: Fri, 5 Aug 2022 11:14:44 -0400
From: Steven Rostedt <rostedt@...dmis.org>
To: Linus Torvalds <torvalds@...ux-foundation.org>
Cc: LKML <linux-kernel@...r.kernel.org>,
Ingo Molnar <mingo@...nel.org>,
Andrew Morton <akpm@...ux-foundation.org>,
Daniel Bristot de Oliveira <bristot@...nel.org>,
Douglas Anderson <dianders@...omium.org>,
Li kunyu <kunyu@...china.com>, Li zeming <zeming@...china.com>,
Linyu Yuan <quic_linyyuan@...cinc.com>,
"Masami Hiramatsu (Google)" <mhiramat@...nel.org>,
Slark Xiao <slark_xiao@....com>,
Tiezhu Yang <yangtiezhu@...ngson.cn>,
Xiang wangx <wangxiang@...rlc.com>,
Zheng Yejian <zhengyejian1@...wei.com>,
Zhiqiang Liu <liuzhiqiang26@...wei.com>,
sunliming <sunliming@...inos.cn>,
Dan Carpenter <dan.carpenter@...cle.com>
Subject: [GIT PULL v2.5] tracing: Updates for 5.20 / 6.0
[ This time trimming the diff from the email ]
Linus,
Tracing updates for 5.20 / 6.0
- Runtime verification infrastructure
This is the biggest change for this pull request. It introduces the
runtime verification that is necessary for running Linux on safety
critical systems. It allows for deterministic automata models to be
inserted into the kernel that will attach to tracepoints, where the
information on these tracepoints will move the model from state to state.
If a state is encountered that does not belong to the model, it will then
activate a given reactor, that could just inform the user or even panic
the kernel (for which safety critical systems will detect and can recover
from).
- Two monitor models are also added: Wakeup In Preemptive (WIP - not to be
confused with "work in progress"), and Wakeup While Not Running (WWNR).
- Added __vstring() helper to the TRACE_EVENT() macro to replace several
vsnprintf() usages that were all doing it wrong.
- eprobes now can have their event autogenerated when the event name is left
off.
- The rest is various cleanups and fixes.
Please pull the latest trace-v6.0 tree, which can be found at:
git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace.git
trace-v6.0
Tag SHA1: b5e67427372a18ccdde74202fcc3628027fec0de
Head SHA1: f1a15b977ff864513133ecb611eb28603d32c1b4
Dan Carpenter (1):
rv: Unlock on error path in rv_unregister_reactor()
Daniel Bristot de Oliveira (16):
rv: Add Runtime Verification (RV) interface
rv: Add runtime reactors interface
rv/include: Add helper functions for deterministic automata
rv/include: Add deterministic automata monitor definition via C macros
rv/include: Add instrumentation helper functions
Documentation/rv: Add a basic documentation
tools/rv: Add dot2c
Documentation/rv: Add deterministic automaton documentation
tools/rv: Add dot2k
Documentation/rv: Add deterministic automata monitor synthesis documentation
Documentation/rv: Add deterministic automata instrumentation documentation
rv/monitor: Add the wip monitor skeleton created by dot2k
rv/monitor: Add the wip monitor
rv/monitor: Add the wwnr monitor
rv/reactor: Add the printk reactor
rv/reactor: Add the panic reactor
Douglas Anderson (1):
tracing: Fix sleeping while atomic in kdb ftdump
Li kunyu (1):
blk-iocost: tracing: atomic64_read(&ioc->vtime_rate) is assigned an extra semicolon
Li zeming (1):
tracepoints: It is CONFIG_TRACEPOINTS not CONFIG_TRACEPOINT
Linyu Yuan (4):
tracing: eprobe: Add missing log index
tracing: eprobe: Remove duplicate is_good_name() operation
tracing: Auto generate event name when creating a group of events
selftests/ftrace: Add test case for GRP/ only input
Masami Hiramatsu (Google) (2):
selftests/kprobe: Update test for no event name syntax error
tracing/eprobe: Show syntax error logs in error_log file
Slark Xiao (1):
scripts/tracing: Fix typo 'the the' in comment
Steven Rostedt (Google) (23):
ftrace: Be more specific about arch impact when function tracer is enabled
tracing: devlink: Use static array for string in devlink_trap_report event
tracing/ipv4/ipv6: Use static array for name field in fib*_lookup_table event
neighbor: tracing: Have neigh_create event use __string()
tracing/events: Add __vstring() and __assign_vstr() helper macros
tracing/IB/hfi1: Use the new __vstring() helper
tracing/ath: Use the new __vstring() helper
tracing/brcm: Use the new __vstring() helper
tracing/iwlwifi: Use the new __vstring() helper
usb: chipidea: tracing: Use the new __vstring() helper
xhci: tracing: Use the new __vstring() helper
usb: musb: tracing: Use the new __vstring() helper
scsi: iscsi: tracing: Use the new __vstring() helper
scsi: qla2xxx: tracing: Use the new __vstring() helper
mac80211: tracing: Use the new __vstring() helper
selftests/kprobe: Do not test for GRP/ without event failures
tracing: Add example and documentation for new __vstring() macro
USB: mtu3: tracing: Use the new __vstring() helper
batman-adv: tracing: Use the new __vstring() helper
tracing: Use a copy of the va_list for __assign_vstr()
ftrace/x86: Add back ftrace_expected assignment
tracing: Use a struct alignof to determine trace event field alignment
tracing: Use alignof__(struct {type b;}) instead of offsetof()
Tiezhu Yang (1):
samples: Use KSYM_NAME_LEN for kprobes
Xiang wangx (1):
tracing/user_events: Fix syntax errors in comments
Zheng Yejian (2):
tracing/histograms: Fix memory leak problem
tracing/histograms: Simplify create_hist_fields()
Zhiqiang Liu (1):
tracing: Use free_trace_buffer() in allocate_trace_buffers()
sunliming (1):
fprobe/samples: Make sample_probe static
----
Documentation/trace/index.rst | 1 +
Documentation/trace/kprobetrace.rst | 8 +-
.../trace/rv/da_monitor_instrumentation.rst | 171 +++++
Documentation/trace/rv/da_monitor_synthesis.rst | 147 ++++
Documentation/trace/rv/deterministic_automata.rst | 184 +++++
Documentation/trace/rv/index.rst | 14 +
Documentation/trace/rv/monitor_wip.rst | 55 ++
Documentation/trace/rv/monitor_wwnr.rst | 45 ++
Documentation/trace/rv/runtime-verification.rst | 231 ++++++
Documentation/trace/uprobetracer.rst | 8 +-
arch/x86/kernel/ftrace.c | 1 +
drivers/infiniband/hw/hfi1/trace_dbg.h | 8 +-
drivers/net/wireless/ath/ath10k/trace.h | 14 +-
drivers/net/wireless/ath/ath11k/trace.h | 7 +-
drivers/net/wireless/ath/ath6kl/trace.h | 14 +-
drivers/net/wireless/ath/trace.h | 7 +-
drivers/net/wireless/ath/wil6210/trace.h | 7 +-
.../broadcom/brcm80211/brcmfmac/tracepoint.h | 12 +-
.../brcm80211/brcmsmac/brcms_trace_brcmsmac_msg.h | 12 +-
.../net/wireless/intel/iwlwifi/iwl-devtrace-msg.h | 12 +-
drivers/usb/chipidea/trace.h | 4 +-
drivers/usb/host/xhci-trace.h | 4 +-
drivers/usb/mtu3/mtu3_trace.h | 6 +-
drivers/usb/musb/musb_trace.h | 4 +-
include/linux/rv.h | 70 ++
include/linux/sched.h | 11 +
include/linux/trace_events.h | 18 +
include/linux/tracepoint.h | 2 +-
include/rv/automata.h | 75 ++
include/rv/da_monitor.h | 544 ++++++++++++++
include/rv/instrumentation.h | 29 +
include/trace/events/devlink.h | 7 +-
include/trace/events/fib.h | 6 +-
include/trace/events/fib6.h | 8 +-
include/trace/events/iocost.h | 2 +-
include/trace/events/iscsi.h | 4 +-
include/trace/events/neigh.h | 2 +-
include/trace/events/qla.h | 4 +-
include/trace/events/rv.h | 142 ++++
include/trace/stages/stage1_struct_define.h | 3 +
include/trace/stages/stage2_data_offsets.h | 3 +
include/trace/stages/stage4_event_fields.h | 11 +-
include/trace/stages/stage5_get_offsets.h | 4 +
include/trace/stages/stage6_event_callback.h | 12 +
kernel/fork.c | 14 +
kernel/trace/Kconfig | 5 +-
kernel/trace/Makefile | 1 +
kernel/trace/rv/Kconfig | 78 ++
kernel/trace/rv/Makefile | 8 +
kernel/trace/rv/monitors/wip/wip.c | 88 +++
kernel/trace/rv/monitors/wip/wip.h | 46 ++
kernel/trace/rv/monitors/wwnr/wwnr.c | 87 +++
kernel/trace/rv/monitors/wwnr/wwnr.h | 46 ++
kernel/trace/rv/reactor_panic.c | 43 ++
kernel/trace/rv/reactor_printk.c | 42 ++
kernel/trace/rv/rv.c | 799 +++++++++++++++++++++
kernel/trace/rv/rv.h | 68 ++
kernel/trace/rv/rv_reactors.c | 510 +++++++++++++
kernel/trace/trace.c | 46 +-
kernel/trace/trace.h | 9 +
kernel/trace/trace_dynevent.c | 2 +-
kernel/trace/trace_eprobe.c | 37 +-
kernel/trace/trace_events_hist.c | 7 +-
kernel/trace/trace_events_user.c | 2 +-
kernel/trace/trace_kprobe.c | 16 +-
kernel/trace/trace_probe.c | 4 +
kernel/trace/trace_probe.h | 5 +-
kernel/trace/trace_uprobe.c | 12 +-
net/batman-adv/trace.h | 9 +-
net/mac80211/trace_msg.h | 6 +-
samples/fprobe/fprobe_example.c | 2 +-
samples/kprobes/kprobe_example.c | 5 +-
samples/kprobes/kretprobe_example.c | 5 +-
samples/trace_events/trace-events-sample.c | 14 +-
samples/trace_events/trace-events-sample.h | 32 +-
scripts/tracing/draw_functrace.py | 2 +-
.../ftrace/test.d/dynevent/add_remove_eprobe.tc | 9 +-
.../ftrace/test.d/dynevent/add_remove_kprobe.tc | 7 +
.../ftrace/test.d/kprobe/kprobe_syntax_errors.tc | 2 +-
tools/verification/dot2/Makefile | 26 +
tools/verification/dot2/automata.py | 174 +++++
tools/verification/dot2/dot2c | 26 +
tools/verification/dot2/dot2c.py | 254 +++++++
tools/verification/dot2/dot2k | 47 ++
tools/verification/dot2/dot2k.py | 177 +++++
.../dot2/dot2k_templates/main_global.c | 91 +++
.../dot2/dot2k_templates/main_per_cpu.c | 91 +++
.../dot2/dot2k_templates/main_per_task.c | 91 +++
tools/verification/models/wip.dot | 16 +
tools/verification/models/wwnr.dot | 16 +
90 files changed, 4824 insertions(+), 186 deletions(-)
create mode 100644 Documentation/trace/rv/da_monitor_instrumentation.rst
create mode 100644 Documentation/trace/rv/da_monitor_synthesis.rst
create mode 100644 Documentation/trace/rv/deterministic_automata.rst
create mode 100644 Documentation/trace/rv/index.rst
create mode 100644 Documentation/trace/rv/monitor_wip.rst
create mode 100644 Documentation/trace/rv/monitor_wwnr.rst
create mode 100644 Documentation/trace/rv/runtime-verification.rst
create mode 100644 include/linux/rv.h
create mode 100644 include/rv/automata.h
create mode 100644 include/rv/da_monitor.h
create mode 100644 include/rv/instrumentation.h
create mode 100644 include/trace/events/rv.h
create mode 100644 kernel/trace/rv/Kconfig
create mode 100644 kernel/trace/rv/Makefile
create mode 100644 kernel/trace/rv/monitors/wip/wip.c
create mode 100644 kernel/trace/rv/monitors/wip/wip.h
create mode 100644 kernel/trace/rv/monitors/wwnr/wwnr.c
create mode 100644 kernel/trace/rv/monitors/wwnr/wwnr.h
create mode 100644 kernel/trace/rv/reactor_panic.c
create mode 100644 kernel/trace/rv/reactor_printk.c
create mode 100644 kernel/trace/rv/rv.c
create mode 100644 kernel/trace/rv/rv.h
create mode 100644 kernel/trace/rv/rv_reactors.c
create mode 100644 tools/verification/dot2/Makefile
create mode 100644 tools/verification/dot2/automata.py
create mode 100644 tools/verification/dot2/dot2c
create mode 100644 tools/verification/dot2/dot2c.py
create mode 100644 tools/verification/dot2/dot2k
create mode 100644 tools/verification/dot2/dot2k.py
create mode 100644 tools/verification/dot2/dot2k_templates/main_global.c
create mode 100644 tools/verification/dot2/dot2k_templates/main_per_cpu.c
create mode 100644 tools/verification/dot2/dot2k_templates/main_per_task.c
create mode 100644 tools/verification/models/wip.dot
create mode 100644 tools/verification/models/wwnr.dot
---------------------------
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